Natural and artificial landscape change in a Dutch estuary: partially monitored with low budget method (a study in the fourth dimension)

This study includes some aspects of the shift in the Dutch attitude in relation to water during the past millennia from defense to attack to keeping the balance ("co-evolution"). It has a special focus on the freshwater tidal part, which embraces the largest seaport of the world: Rotterdam, as well as the largest national park of The Netherlands. It reports especially about a young mans endeavor in half a century real time monitoring of some land(scape) units with simple means.